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git01.mediatek.com / filogic / uboot / 5e017409383c3677e376fa7a359d2c71c0db31b8 / . / arch / arc / lib / bootm.c
blob: b143392ee6c2c16a4da87dc375c45bcf969474c6 [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -0400[diff] [blame]1// SPDX-License-Identifier: GPL-2.0+
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]2/*
3 * Copyright (C) 2013-2014 Synopsys, Inc. All rights reserved.
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]4 */
5
Simon Glass0726d9d2023-12-15 20:14:13 -0700[diff] [blame]6#include <bootm.h>
Simon Glass1ea97892020-05-10 11:40:00 -0600[diff] [blame]7#include <bootstage.h>
Simon Glassed38aef2020-05-10 11:40:03 -0600[diff] [blame]8#include <env.h>
Simon Glass2dc9c342020-05-10 11:40:01 -0600[diff] [blame]9#include <image.h>
Simon Glass8f3f7612019-11-14 12:57:42 -0700[diff] [blame]10#include <irq_func.h>
Simon Glass0f2af882020-05-10 11:40:05 -0600[diff] [blame]11#include <log.h>
Eugeniy Paltsev67fd56a2018-03-21 15:59:02 +0300[diff] [blame]12#include <asm/cache.h>
Simon Glass3ba929a2020-10-30 21:38:53 -0600[diff] [blame]13#include <asm/global_data.h>
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]14
15DECLARE_GLOBAL_DATA_PTR;
16
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]17static int cleanup_before_linux(void)
18{
19 disable_interrupts();
Eugeniy Paltsev67fd56a2018-03-21 15:59:02 +0300[diff] [blame]20 sync_n_cleanup_cache_all();
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]21
22 return 0;
23}
24
Simon Glassdf00afa2022-09-06 20:26:50 -0600[diff] [blame]25__weak int board_prep_linux(struct bootm_headers *images) { return 0; }
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]26
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]27/* Subcommand: PREP */
Simon Glassdf00afa2022-09-06 20:26:50 -0600[diff] [blame]28static int boot_prep_linux(struct bootm_headers *images)
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]29{
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]30 int ret;
31
Simon Glassae7ed572023-02-05 15:40:13 -0700[diff] [blame]32 if (IS_ENABLED(CONFIG_LMB)) {
Ashok Reddy Soma8aaae3d2022-07-07 10:45:37 +0200[diff] [blame]33 ret = image_setup_linux(images);
34 if (ret)
35 return ret;
36 }
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]37
38 return board_prep_linux(images);
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]39}
40
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]41/* Generic implementation for single core CPU */
42__weak void board_jump_and_run(ulong entry, int zero, int arch, uint params)
43{
44 void (*kernel_entry)(int zero, int arch, uint params);
45
46 kernel_entry = (void (*)(int, int, uint))entry;
47
48 kernel_entry(zero, arch, params);
49}
Alexey Brodkincf9cafd2015-04-13 13:37:05 +0300[diff] [blame]50
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]51/* Subcommand: GO */
Simon Glassdf00afa2022-09-06 20:26:50 -0600[diff] [blame]52static void boot_jump_linux(struct bootm_headers *images, int flag)
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]53{
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]54 ulong kernel_entry;
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]55 unsigned int r0, r2;
56 int fake = (flag & BOOTM_STATE_OS_FAKE_GO);
57
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]58 kernel_entry = images->ep;
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]59
60 debug("## Transferring control to Linux (at address %08lx)...\n",
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]61 kernel_entry);
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]62 bootstage_mark(BOOTSTAGE_ID_RUN_OS);
63
64 printf("\nStarting kernel ...%s\n\n", fake ?
65 "(fake run for tracing)" : "");
66 bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
67
Simon Glass85c057e2021-09-25 19:43:21 -0600[diff] [blame]68 if (CONFIG_IS_ENABLED(OF_LIBFDT) && images->ft_len) {
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]69 r0 = 2;
70 r2 = (unsigned int)images->ft_addr;
71 } else {
72 r0 = 1;
Simon Glass64b723f2017-08-03 12:22:12 -0600[diff] [blame]73 r2 = (unsigned int)env_get("bootargs");
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]74 }
75
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]76 cleanup_before_linux();
77
78 if (!fake)
79 board_jump_and_run(kernel_entry, r0, 0, r2);
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]80}
81
Simon Glass0726d9d2023-12-15 20:14:13 -0700[diff] [blame]82int do_bootm_linux(int flag, struct bootm_info *bmi)
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]83{
Simon Glass0726d9d2023-12-15 20:14:13 -0700[diff] [blame]84 struct bootm_headers *images = bmi->images;
85
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]86 /* No need for those on ARC */
87 if ((flag & BOOTM_STATE_OS_BD_T) || (flag & BOOTM_STATE_OS_CMDLINE))
88 return -1;
89
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]90 if (flag & BOOTM_STATE_OS_PREP)
91 return boot_prep_linux(images);
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]92
93 if (flag & (BOOTM_STATE_OS_GO | BOOTM_STATE_OS_FAKE_GO)) {
94 boot_jump_linux(images, flag);
95 return 0;
96 }
97
Eugeniy Paltsev01f45cc2018-03-23 15:35:03 +0300[diff] [blame]98 return -1;
Alexey Brodkinb628c012014-02-04 12:56:15 +0400[diff] [blame]99}